| cytochemistry | Branch of histochemistry associated with the localisation of cellular components by specific staining methods, as for example the localisation of acid phosphatases by the Gomori method. Immunocytochemistry involves the use of labelled antibodies as part of the staining procedure. (18 Nov 1997) |
|---|---|
| histochemistry | Study of the chemical composition of tissues by means of specific staining reactions. (18 Nov 1997) |
| progress | 1. A moving or going forward; a proceeding onward; an advance; specifically: In actual space, as the progress of a ship, carriage, etc. In the growth of an animal or plant; increase. In business of any kind; as, the progress of a negotiation; the progress of art. In knowledge; in proficiency; as, the progress of a child at school. Toward ideal completeness or perfection in respect of quality or condition; applied to individuals, communities, or the race; as, social, moral, religious, or political progress. 2. A journey of state; a circuit; especially, one made by a sovereign through parts of his own dominions. "The king being returned from his progresse." (Evelyn) Origin: L. Progressus, from progredi, p. P. Progressus, to go forth or forward; pro forward + gradi to step, go: cf. F. Progres. See Grade. Source: Websters Dictionary (01 Mar 1998) |
| progress curve | A graphical representation of a chemical or enzyme-catalyzed reaction in which the product concentration or the substrate concentration or the ES binary complex are plotted against time. (05 Mar 2000) |
| progress zone | An undifferentiated population of mesenchyme cells beneath the apical ectodermal ridge of the chick limb bud from which the sucessive parts of the limb are laid down in a proximo distal sequence. (18 Nov 1997) |
| abstracting and indexing | Shortening or summarizing of documents; assigning of descriptors for referencing documents. (12 Dec 1998) |
| academies and institutes | Organizations representing specialised fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., national academy of sciences, brookings institution, etc. (12 Dec 1998) |
| accounts payable and receivable | Short-term debt obligations and assets occurring in the regular course of operational transactions. (12 Dec 1998) |
| aged, 80 and over | A person 80 years of age and older. (12 Dec 1998) |
| algae and fungi | Algae represent a group of spore-propagating plants, unicellular or undifferentiated into root, stem, and leaf. They include seaweed and many unicellular fresh water plants, most of which contain chlorophyll. They account for about 90% of the earth's photosynthetic activity. Fungi are eukaryotic, heterotrophic organisms that live as saprobes or parasites and include mushrooms, yeasts, smuts, molds, etc. They lack chlorophyll. (12 Dec 1998) |
| alkyl and aryl transferases | <enzyme> A somewhat heterogeneous class of enzymes that catalyze the transfer of alkyl or related groups (excluding methyl groups). Registry number: EC 2.5 (12 Dec 1998) |
| allergy and immunology | A medical specialty concerned with the hypersensitivity of the individual to foreign substances and protection from the resultant infection or disorder. (12 Dec 1998) |
| alligators and crocodiles | Large, long-tailed reptiles, including caimans, of the order loricata. (12 Dec 1998) |
| Amine Precursor Uptake and Decarboxylation | <pharmacology, physiology> Paracrine cells of which argentaffin cells are an example. Usage of the term APUD is neither helpful nor memorable. Acronym: APUD (11 Nov 1997) |
| amino acids, peptides, and proteins | Amino acids and chains of amino acids connected by peptide linkages. (12 Dec 1998) |